pizza       
noun [ C or U ] uk/ˈpiːt.sə/ us/ˈpiːt.sə/ (US old-fashioned also pizza pie)
A1 比萨饼
a large circle of flat bread baked with cheese, tomatoes, and sometimes meat and vegetables spread on top
  a slice of pizza 一块比萨饼 
 I like lots of different pizza toppings. 我喜欢好多不同的比萨饼配料。 
 a deep-pan (US deep-dish) pizza 厚比萨饼 
 - More examples
 - a pepperoni pizza
 - I thought I'd dress up the frozen pizza with a few extra tomatoes and olives.
 - There's not much to eat in the fridge. Should I send out for a pizza?
 - pizza toppings
 - If you pop the pizza in the oven now, it'll be ready in 15 minutes.